Llano, TX Radon Mitigation and Testing

Q: What EPA Radon Zone is Llano in?

Llano is in Llano County, EPA Zone 2.

Q: How much does radon mitigation cost in Llano?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Llano County

EPA Zone 2

Centered in Llano County in the Texas Hill Country, this community sits atop the distinctive granite formations known as the Llano Uplift. Testing data for zip code 78643 is currently limited, though the area's unique geological foundation can still influence radon levels. Individual home testing provides the most accurate assessment for this geologically distinct region.

Llano, TX Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Llano, TX Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Llano Radon Facts

Key details about the radon risk profile for Llano and the 78643 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Llano County, TX

Zip Code

78643

Predicted Screening Level

2–4 pCi/L (Zone 2)

Llano and the 78643 zip code are located in Llano County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Llano, TX

What EPA Radon Zone is Llano in?

Llano and the 78643 zip code are in Llano County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Llano?

Radon mitigation in Llano typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Llano?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Texas

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Lubbock	12.67 pCi/L	9
San Antonio	6.57 pCi/L	7
Austin	6.14 pCi/L	7
Dallas	8.00 pCi/L	5
Abilene	4.50 pCi/L	2
Houston	3.50 pCi/L	2
Plano	6.00 pCi/L	1
Frisco	3.00 pCi/L	1
Nacogdoches	No submissions	0